Save your Fingers! Saw Automatically Stops Before It Hits Your Fingers — Here’s How (www.youtube.com)

Check out SawStop, it’s a saw that could save you from a serious injury. It works just like any other table saw, but stops immediately when in contact with flesh.

It stops within 5 ms of recognizing flesh and hence is capable of stopping many accidents.

Check out the video to understand how this useful innovation works using electrical signals